About: http://webisa.webdatacommons.org/391496465

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	As a fact, Lake Toba was a product of a massive supervolcanic eruption about 77,000 years ago, being known as the Toba catastrophe theory that are rumored to have killed many of the human population.
http://www.w3.org/ns/prov#wasQuotedFrom	allindonesiatravel.com